package code._19container._03map._02hashTable;

import java.util.Hashtable;

public class Demo {
    public static void main(String[] args) {
        Hashtable<String, Integer> hashtable = new Hashtable<>();
        hashtable.put("zs", 20);
        //key不允许重复
        hashtable.put("zs", 21);
        hashtable.put("ls", 22);
        hashtable.put("ww", 23);
        hashtable.put("zl", 24);
        System.out.println("hashtable = " + hashtable);
    }
}
